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Eliminated construction of full parse tree for main table AML

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date	2000.07.14.21.51.00;	author rmoore1;	state Exp;
This commit is contained in:
aystarik 2005-06-29 18:28:11 +00:00
parent 4e325c0046
commit 897f4e021a
1 changed files with 55 additions and 24 deletions
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79
source/components/namespace/nsload.c
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@ -153,23 +153,72 @@ AcpiNsParseTable (
FUNCTION_TRACE ("NsParseTable");
/* Create the root object */
/*
* AML Parse, pass 1
*
* In this pass, we load most of the namespace. Control methods
* are not parsed until later. A parse tree is not created. Instead,
* each Parser Op subtree is deleted when it is finished. This saves
* a great deal of memory, and allows a small cache of parse objects
* to service the entire parse. The second pass of the parse then
* performs another complete parse of the AML..
*/
/* Create and init a root object */
AcpiGbl_ParsedNamespaceRoot = AcpiPsAllocOp (AML_SCOPE_OP);
if (!AcpiGbl_ParsedNamespaceRoot)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/* Initialize the root object */
((ACPI_NAMED_OP *) AcpiGbl_ParsedNamespaceRoot)->Name = ACPI_ROOT_NAME;
/* Pass 1: Parse everything except control method bodies */
DEBUG_PRINT (TRACE_PARSE,
("NsParseTable: *PARSE* 1st pass parse\n"));
Status = AcpiPsParseAml (AcpiGbl_ParsedNamespaceRoot,
TableDesc->AmlPointer,
TableDesc->AmlLength, 0);
TableDesc->AmlLength, PARSE_DELETE_TREE,
AcpiDsLoad1BeginOp,
AcpiDsLoad1EndOp);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
AcpiPsDeleteParseTree (AcpiGbl_ParsedNamespaceRoot);
/*
* AML Parse, pass 2
*
* In this pass, we resolve forward references and other things
* that could not be completed during the first pass.
* Another complete parse of the AML is performed, but the
* overhead of this is compensated for by the fact that the
* parse objects are all cached.
*/
/* Create and init a root object */
AcpiGbl_ParsedNamespaceRoot = AcpiPsAllocOp (AML_SCOPE_OP);
if (!AcpiGbl_ParsedNamespaceRoot)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
((ACPI_NAMED_OP *) AcpiGbl_ParsedNamespaceRoot)->Name = ACPI_ROOT_NAME;
/* Pass 2: Resolve forward references */
DEBUG_PRINT (TRACE_PARSE,
("NsParseTable: *PARSE* 2nd pass parse\n"));
Status = AcpiPsParseAml (AcpiGbl_ParsedNamespaceRoot,
TableDesc->AmlPointer,
TableDesc->AmlLength, PARSE_DELETE_TREE,
AcpiDsLoad2BeginOp,
AcpiDsLoad2EndOp);
if (ACPI_FAILURE (Status))
{
@ -177,30 +226,12 @@ AcpiNsParseTable (
}
#ifndef PARSER_ONLY
DEBUG_PRINT (TRACE_PARSE,
("NsParseTable: Building Internal Namespace\n"));
Status = AcpiPsWalkParsedAml (AcpiPsGetChild (AcpiGbl_ParsedNamespaceRoot),
AcpiGbl_ParsedNamespaceRoot, NULL,
Scope, NULL, NULL,
TableDesc->TableId,
AcpiDsLoad2BeginOp,
AcpiDsLoad2EndOp);
/*
* Now that the internal namespace has been constructed, we can delete the
* parsed namespace, since it is no longer needed
*/
DEBUG_PRINT (TRACE_PARSE, ("NsParseTable: Deleting Parsed Namespace\n"));
/* TBD: [Restructure] must generate stats on the fly, can't walk the tree */
DEBUG_EXEC (AcpiDbGenerateStatistics (AcpiGbl_ParsedNamespaceRoot, 0));
AcpiPsDeleteParseTree (AcpiGbl_ParsedNamespaceRoot);
AcpiGbl_ParsedNamespaceRoot = NULL;
#endif
return_ACPI_STATUS (Status);